They said go big!

All discussion about lathes including but not limited to: South Bend, Hardinge, Logan, Monarch, Clausing and other HSM lathes, including imports

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vair8
Posts: 19
Joined: Thu Nov 12, 2020 12:16 am
Location: Ogden, UT

Re: They said go big!

Post by vair8 »

NP317 wrote: Wed Nov 18, 2020 1:58 am Be kind. It could be a periodic medical dosage issue.
RussN
Not trying to be rude:) read through some of his past posts and he has great info. Totally get it. Not a big deal.
SteveM
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Joined: Mon Jun 27, 2005 6:18 pm
Location: Wisconsin

Re: They said go big!

Post by SteveM »

Nice find on the lathe. When I first saw it, I didn't think it had much swing, and then realized it's 9 freakin' feet long between centers! That thing is as long as both of my lathes and both of my mills side by side.

You should look up information on the King-Way tool used in measuring when you are scraping ways.
KingWay.jpg
It measures not off the top of the v-ways, but on the sides of the V, which is much more accurate, as the top may not even be consistent from one end of the bed to another.

I think a platform using that principal would make a good level base for checking level.

There is a guy on youtube that built an "improved" version. Not sure about the improved part, but it appears to be easier to make that duplicating the original.

Steve
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GlennW
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Re: They said go big!

Post by GlennW »

Glenn

Operating machines is perfectly safe......until you forget how dangerous it really is!
vair8
Posts: 19
Joined: Thu Nov 12, 2020 12:16 am
Location: Ogden, UT

Re: They said go big!

Post by vair8 »

Thats sweet! any suggestions on cutting out the tubing without a mill? I may have to. give that a shot. The other thing I bought was a couple of 123 blocks and figured maybe measuring from the flat might be better, not sure about that though. I'm also not convinced in the accuracy of the blocks.

Slapped a little stand together for my chucks tonight and emptied out an old toolbox base that I'm going to use for all my tooling. It's going to be a while before I get my garage organized again.
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John Hasler
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Re: They said go big!

Post by John Hasler »

vair8 wrote: Fri Nov 20, 2020 11:19 pm Thats sweet! any suggestions on cutting out the tubing without a mill?
You might be able to get away with using a piece of channel instead of tubing.
LouStule
Posts: 86
Joined: Fri Sep 11, 2020 7:20 pm
Location: Washington State

Re: They said go big!

Post by LouStule »

vair8 wrote: Fri Nov 20, 2020 11:19 pm Thats sweet! any suggestions on cutting out the tubing without a mill? I may have to. give that a shot. The other thing I bought was a couple of 123 blocks and figured maybe measuring from the flat might be better, not sure about that though. I'm also not convinced in the accuracy of the blocks.

Slapped a little stand together for my chucks tonight and emptied out an old toolbox base that I'm going to use for all my tooling. It's going to be a while before I get my garage organized again.
Nice stand!
SteveM
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Location: Wisconsin

Re: They said go big!

Post by SteveM »

vair8 wrote: Fri Nov 20, 2020 11:19 pm Thats sweet! any suggestions on cutting out the tubing without a mill? I may have to. give that a shot.
If you can mount a pair of dowel pins at a proper spacing so that they are parallel, that might do it.

Steve
vair8
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Joined: Thu Nov 12, 2020 12:16 am
Location: Ogden, UT

Re: They said go big!

Post by vair8 »

Anyone know what kind of oil I should be using on the oiling points and in the gearbox on this rig? I have the maintenance manual, and it says the headstock and all oiling points besides the gearbox should be a fully inhibited turbine type oil, and the gearbox a multipurpose lithium based grease.

I have no idea what turbine type oil is, or if theres a more modern equivalent I should be looking for, as far as the lithium based grease I know I can find something that meets that description, but I'm wondering what you all use and if there's any specific one I should be looking for.
shootnride
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Joined: Tue Jun 05, 2012 12:31 am
Location: Sacramento, Ca.

Re: They said go big!

Post by shootnride »

Mobil DTE Series oils are widely used in gear head lathes. I have been using their DTE25 in my lathe for about 10 years. You can get some information about those oils here:
https://www.global.mobil.com/en/lubrica ... bil-dte-26

Ted
Some people raise the IQ of the room when they enter.........others when they leave.
vair8
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Joined: Thu Nov 12, 2020 12:16 am
Location: Ogden, UT

Re: They said go big!

Post by vair8 »

So I’ve had some time to start making some parts, I’m wanting to do a part that I need to drill a circular hole pattern on, I don’t have a mill. I do have a drill press but it’s ancient in a bad way and I don’t trust it’s accuracy, so my thought was I want to grab an indexing plate and attach it to the back side of the head and then make an attachment for a hand drill to the carriage. I’m pretty sure it will work but I’m wondering if anyone has a better/easier idea to make that work. The first part I have in mind is only a 1.5” piece of round stock. But I’d like to be able to re-pattern rotors later on with it too.
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Steggy
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Re: They said go big!

Post by Steggy »

How accurate does this circular hole pattern have to be? While I have fudged in the past and laid out a circular hole pattern in a lathe (key word: laid out—the drilling was in a drill press), the layout wasn't all that accurate due to cumulative slop and I ended up redoing the part in a mill. It's best to not use a hammer to put in a wine bottle cork.
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mklotz
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Re: They said go big!

Post by mklotz »

How about old-fashioned hand layout? Draw a circle of diameter 'D' on your stock, then set your dividers to a chordal length 'C' given by:

C = D * sin (180 / N) ; where N = number of divisions

and use them to strike off N points on the circle.
Regards, Marv

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